1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe631602875666c0ad98ad96b2229ee18dc0cdeeb87cd9c897856ce5727982c52. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bccae01-4006-46ed-97d0-c7c388800f15.json and https://artists.proofprofile.net/proofs/artist/3bccae01-4006-46ed-97d0-c7c388800f15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10806d3ab08bcbdbd59b32cd00b92a9ae84aa4fbaeed597e650d9bc4fc056878. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES47E2001469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c590d10439967c89697a06bf58c18ee33d281b615010195d5d32e0004e0edb2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2368427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03724f129de91bd04a9fc35617234212149598cdc7f9e351c71f3e1746753b5a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9M2263067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddcc9b334c9c887121a11b1d0e163990ebe016cc03d44681611a33dc4d6688a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9M2263068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331fc609fea819aa206fcdad5b676de2c9bee60fba32c2f9cc61b524b1aa76b7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9M2245374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc9a9e748f57ca5a91bcf97e563143556ff5c3457678d28cfb8316a40d66c75. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92471786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26a839cc08624aba5f1284624c41e0a8c7c2ea4501d79a6d99b1efcba8e1378. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES47E2003684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10806d3ab08bcbdbd59b32cd00b92a9ae84aa4fbaeed597e650d9bc4fc056878. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES47E2001469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8add781472832ac533cc47c08eed0316ab9d7caa0d39d25c25ed19947e07d41. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011977468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5b81a33aefd8fae32d5a319adc3f4dee81f2fbc2afb46e0ecd7835fa2071cb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2479859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed4b438bdb7f067fa9ce788090f682fdfefd2667869a9412cec21215243a746. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2303277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92020833d68c9356a62477ab947b8eb35e81d7880c4a87fa5c335d54fcb77d59. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2302147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600693b440d10190421d263677e3d135da1949f9e534b0fb8db937de71a65a87. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2205238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8028ac527b9d2d376db2034a7788cef36267b8158f514c3591c744549b8bb6b4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2101194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a5c096320bc84a5c7b94ecfa317d9b362744aa2fe8b081efde5065335c7bd2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6F2568532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3306688a3923d855364b6b2d7501314b5a5b0a9b6a665eb415565db45346265. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2440924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f131db55a544cec75ee4158889966fde544a61e1f651bde1049036830304ffa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA092311161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6308e9d5667286529ac7a8b8bc6d25cdfa8d2e8394adfa42448e2291a752ea41. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA092234190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7722911ecbfe26dc026a5cd72e406c0a362c3cd7fb7ee23703e02cb50f578288. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2278068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda3c65a1f9197c6e15050ff968572c1e829dac30e1d1683d20c44f09e4b374d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2461174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb47f2bd0fa6cf76eb484267bde6707d9104957477bed8a5140d651f4ad6725a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2368412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7891dcde380f88f9b69f2fbed94a618a09fcd06927aa4c2ddaad706c79d97bc3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2387829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51531584ca2b775b677975fe9276790abf271a8a47ad5da9e724693b0d6b8aca. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2333074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc447dccec32ef9425db136c299de93ea1230dec1dd945f44b4eaa43b2f08c2a1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ32118150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6e40b390631d8c0e29504fe6c0e460b1d80d41497fdd6d8f0789e74402605b. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ62113955.